LEA-M8S / LEA-M8T - Hardware Integration Manual
UBX-13003140 - R07
Production Information
Migration to u-blox M8 modules
Page 19 of 31
3.3
Hardware migration LEA-6T -> LEA-M8T
Pin
LEA-6T
LEA-M8T
Remarks for Migration
Pin Name
Typical Assignment
Pin Name
Typical Assignment
1
SDA
DDC Data
SDA
DDC Data
No difference
2
SCL
DDC Clock
SCL
DDC Clock
No difference
3
TxD
Serial Port
TxD
Serial Port
No difference
4
RxD
Serial Port
RxD
Serial Port
No difference
5
NC
Not Connected
D_SEL
D_SEL =1(or open)
Do not drive low
6
VCC
Supply voltage
VCC
Supply voltage
No difference
7
GND
Ground (digital)
GND
Ground (digital)
No difference
8
VCC_OUT
Output voltage
VCC_OUT
Output voltage
No difference
9
TIMEPULSE2
2
nd
Timepulse
Not Connected
Reserved
Time Pulse 2 is now
available on pin 12
(Safeboot_N / Time Pulse 2)
10
RESET_N
External Reset
RESET_N
External Reset
No difference
11
V_BCKP
Backup voltage supply
V_BCKP
Backup voltage supply
If this was connected to GND
on u-blox 6 module, OK to do
the same on u-blox M8.
12
Safeboot_N
Safeboot_N
Safeboot_N/
TIMEPULSE2
Safeboot_N /Timepulse 2
Must not be held LO during
start-up.
13
GND
Ground
GND
Ground
No difference
14
GND
Ground
GND
Ground
No difference
15
GND
Ground
GND
Ground
No difference
16
RF_IN
GNSS signal input
RF_IN
GNSS signal input
No difference
17
GND
Ground
GND
Ground
No difference
18
VCC_RF
Output Voltage RF section VCC_RF
Output Voltage RF
section
No difference
19
V_ANT
Antenna Bias voltage
V_ANT
Antenna Bias voltage
No difference
20
AADET_N
Active Antenna Detect
EXTINT1/AADET_N
External Interrupt Pin/
Active Antenna Detect
21
Reserved
Not Connected
Reserved
Not Connected
No difference
22
Reserved
Not Connected
Reserved
Not Connected
No difference
23
Reserved
Not Connected
Reserved
Not Connected
No difference
24
VDD_USB
USB Supply
VDD_USB
USB Supply
No difference
25
USB_DM
USB Data
USB_DM
USB Data
No difference
26
USB_DP
USB Data
USB_DP
USB Data
No difference
27
EXTINT0
External Interrupt Pin
EXTINT0
External Interrupt Pin
No difference
28
TIMEPULSE1
Timepulse (1PPS)
TIMEPULSE1
Timepulse (1PPS)
No difference
Table 6: Pin-out comparison LEA-6T vs. LEA-M8T
3.4
Software migration
For overall description of the module software operation, see the
u-blox M8 Receiver Description
Including Protocol Specification
All features requiring a flash on LEA-6N are not supported on LEA-M8S. (AssistNow offline / save config)